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js method for email verification of user input

angryTomforward: 2020-01-14 15:56:112680browse

js method for email verification of user input

<!DOCTYPE html>
<html>

<head>
  <meta charset="UTF-8">
  <title>title</title>

</head>

<body>
  <!-- 请您输入邮箱地址:<input type="text" value="" id="email"/> *<br/> -->
  请您输入邮箱地址：<input type="text" value="" id="email" /> *<br />
  <script>
    //如果输入的是邮箱,那么背景颜色为绿色,否则为红色
    //获取文本框,注册失去焦点的事件
    document.getElementById("email").onblur = function () {
      //判断这个文本框中输入的是不是邮箱
      var reg = /^[0-9a-zA-Z_.-]+[@][0-9a-zA-Z_.-]+([.][a-zA-Z]+){1,2}$/;
      if (reg.test(this.value)) {
        this.style.backgroundColor = "green";
      } else {
        this.style.backgroundColor = "red";
      }
    };
  </script>

</body>

</html>

js method for email verification of user input

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